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Author: bzaczynski

complex-numbers/README.md

@@ -5,14 +5,14 @@
 Create and activate a virtual environment:
 
 ```shell
-$ python -m venv venv
+$ python -m venv ./venv
 $ source venv/bin/activate
 ```
 
 Install dependencies into your active environment:
 
 ```python
-(venv)$ python -m pip install -U pip jupyterlab ipywidgets matplotlib pillow
+(venv)$ python -m pip install -U pip jupyterlab ipywidgets matplotlib
 (venv)$ python -m jupyter labextension install @jupyter-widgets/jupyterlab-manager
 ```
 

complex-numbers/bermuda.ipynb

@@ -188,7 +188,7 @@
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+       "model_id": "b9c1cf1393f8488fb45bb4c770308981",
        "version_major": 2,
        "version_minor": 0
       },
@@ -215,7 +215,7 @@
    "source": [
     "## Flipping\n",
     "\n",
-    "To flip a complex number around an axis, **negate** the relevant component or calculate the **complex conjugate** for the vertical symmetry:"
+    "To flip a complex number around an axis, take the **negative** of the relevant component or calculate the **complex conjugate** for the vertical symmetry:"
    ]
   },
   {
@@ -227,7 +227,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "1ff38a7e8d2440dba02033295191e7b4",
+       "model_id": "ac69bcf4af274a2ba829ff87cef2f511",
        "version_major": 2,
        "version_minor": 0
       },
@@ -276,7 +276,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "63b4982a20e54c4e92554f2382b8e58e",
+       "model_id": "361625647f97461bba690149cb38250e",
        "version_major": 2,
        "version_minor": 0
       },
@@ -314,7 +314,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "02aa4092ad514810baf28288d7034346",
+       "model_id": "2c80157752704b9a9817b3468c53fde9",
        "version_major": 2,
        "version_minor": 0
       },

complex-numbers/fourier.ipynb

@@ -45,7 +45,25 @@
    "source": [
     "## Mixing Tones\n",
     "\n",
-    "Let's mix a few sine waves to produce a sound comprised of multiple frequencies. If you choose close frequency values, then you'll hear a peculiar [beating](https://en.wikipedia.org/wiki/Beat_(acoustics)) interference pattern:"
+    "Let's mix a few sine waves to produce a sound comprised of multiple frequencies."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "55a3c27c-acdf-4a96-bcc6-0613ac2068aa",
+   "metadata": {},
+   "source": [
+    "<div class=\"alert alert-warning\">\n",
+    "    <strong>Note:</strong> The function below declares a variable as global, which is usually considered a bad programming practice. Global variables introduce tight-coupling between unrelated pieces of code, making them less flexible and vulnerable to unintended side effects. In this case, however, it's okay because you want to generate a tone interactively and then visualize and analyze it later.\n",
+    "</div>"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "1f81b532-7e0d-4c3b-9c3f-380ab439d8dd",
+   "metadata": {},
+   "source": [
+    "If you choose close frequency values, then you'll hear a peculiar [beating](https://en.wikipedia.org/wiki/Beat_(acoustics)) interference pattern:"
    ]
   },
   {
@@ -57,7 +75,7 @@
     {
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       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "5541ab5f25a6426eb6c4f4abeae0d7a8",
+       "model_id": "ea19145b9a2e485898ae05841ec25ed2",
        "version_major": 2,
        "version_minor": 0
       },
@@ -104,7 +122,7 @@
     {
      "data": {
       "text/plain": [
-       "[<matplotlib.lines.Line2D at 0x7fbd45d3c3a0>]"
+       "[<matplotlib.lines.Line2D at 0x7f876cb0d370>]"
       ]
      },
      "execution_count": 3,